zint/backend/postal.c

/* postal.c - Handles PostNet, PLANET, FIM. RM4SCC and Flattermarken */

/*
    libzint - the open source barcode library
    Copyright (C) 2008 - 2021 Robin Stuart <rstuart114@gmail.com>
    Including bug fixes by Bryan Hatton

    Redistribution and use in source and binary forms, with or without
    modification, are permitted provided that the following conditions
    are met:

    1. Redistributions of source code must retain the above copyright
       notice, this list of conditions and the following disclaimer.
    2. Redistributions in binary form must reproduce the above copyright
       notice, this list of conditions and the following disclaimer in the
       documentation and/or other materials provided with the distribution.
    3. Neither the name of the project nor the names of its contributors
       may be used to endorse or promote products derived from this software
       without specific prior written permission.

    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
    ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
    IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
    ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
    FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
    DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
    OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
    HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
    LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
    OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
    SUCH DAMAGE.
 */
/* vim: set ts=4 sw=4 et : */

#include <stdio.h>
#ifdef _MSC_VER
#include <malloc.h>
#endif
#include "common.h"

#define DAFTSET "DAFT"
#define KRSET "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ"
#define KASUTSET "1234567890-abcdefgh"
#define CHKASUTSET "0123456789-abcdefgh"
#define SHKASUTSET "1234567890-ABCDEFGHIJKLMNOPQRSTUVWXYZ"

/* PostNet number encoding table - In this table L is long as S is short */
static const char *PNTable[10] = {
    "LLSSS", "SSSLL", "SSLSL", "SSLLS", "SLSSL", "SLSLS", "SLLSS", "LSSSL",
    "LSSLS", "LSLSS"
};

static const char *PLTable[10] = {
    "SSLLL", "LLLSS", "LLSLS", "LLSSL", "LSLLS", "LSLSL", "LSSLL", "SLLLS",
    "SLLSL", "SLSLL"
};

static const char *RoyalValues[36] = {
    "11", "12", "13", "14", "15", "10", "21", "22", "23", "24", "25",
    "20", "31", "32", "33", "34", "35", "30", "41", "42", "43", "44", "45", "40", "51", "52",
    "53", "54", "55", "50", "01", "02", "03", "04", "05", "00"
};

/* 0 = Full, 1 = Ascender, 2 = Descender, 3 = Tracker */
static const char *RoyalTable[36] = {
    "3300", "3210", "3201", "2310", "2301", "2211", "3120", "3030", "3021",
    "2130", "2121", "2031", "3102", "3012", "3003", "2112", "2103", "2013", "1320", "1230",
    "1221", "0330", "0321", "0231", "1302", "1212", "1203", "0312", "0303", "0213", "1122",
    "1032", "1023", "0132", "0123", "0033"
};

static const char *FlatTable[10] = {
    "0504", "18", "0117", "0216", "0315", "0414", "0513", "0612", "0711", "0810"
};

static const char *KoreaTable[10] = {
    "1313150613", "0713131313", "0417131313", "1506131313",
    "0413171313", "17171313", "1315061313", "0413131713", "17131713", "13171713"
};

static const char *JapanTable[19] = {
    "114", "132", "312", "123", "141", "321", "213", "231", "411", "144",
    "414", "324", "342", "234", "432", "243", "423", "441", "111"
};

/* Set height for POSTNET/PLANET codes, maintaining ratio */
static int usps_set_height(struct zint_symbol *symbol, const int no_errtxt) {
    /* USPS Domestic Mail Manual (USPS DMM 300) Jan 8, 2006 (updated 2011) 708.4.2.5 POSTNET Barcode Dimensions and
       Spacing
       http://web.archive.org/web/20061113174253/http://pe.usps.com/cpim/ftp/manuals/dmm300/full/mailingStandards.pdf
       Using bar pitch as X (1" / 43) ~ 0.023" based on 22 bars + 21 spaces per inch (bar width 0.015" - 0.025")
       Half bar height 0.05" +- 0.01;  0.040" (min) / 0.025" (X max) = 1.6 min, 0.060" (max) / 0.015" (X min) = 4 max
       Full bar height 0.125" +- 0.01; 0.115" (min) / 0.025" (X max) = 4.6 min, 0.135" (max) / 0.015" (X min) = 9 max
     */
    int error_number = 0;
    float h_ratio; /* Half ratio */

#ifdef COMPLIANT_HEIGHTS
    symbol->row_height[0] = 0.075f * 43; /* 3.225 */
    symbol->row_height[1] = 0.05f * 43; /* 2.15 */
#else
    symbol->row_height[0] = 6.0f;
    symbol->row_height[1] = 6.0f;
#endif
    if (symbol->height) {
        h_ratio = symbol->row_height[1] / (symbol->row_height[0] + symbol->row_height[1]); /* 0.4 */
        symbol->row_height[1] = symbol->height * h_ratio;
        if (symbol->row_height[1] < 0.5f) { /* Absolute minimum */
            symbol->row_height[1] = 0.5f;
            symbol->row_height[0] = 0.5f / h_ratio - 0.5f; /* 0.75 */
        } else {
            symbol->row_height[0] = symbol->height - symbol->row_height[1];
        }
    }
    symbol->height = symbol->row_height[0] + symbol->row_height[1];

#ifdef COMPLIANT_HEIGHTS
    if (symbol->height < 4.6f || symbol->height > 9.0f) {
        error_number = ZINT_WARN_NONCOMPLIANT;
        if (!no_errtxt) {
            strcpy(symbol->errtxt, "498: Height not compliant with standards");
        }
    }
#else
    (void)&no_errtxt;
#endif

    return error_number;
}

/* Handles the PostNet system used for Zip codes in the US */
static int postnet(struct zint_symbol *symbol, unsigned char source[], char dest[], int length) {
    int i, sum, check_digit;
    int error_number = 0;

    if (length > 38) {
        strcpy(symbol->errtxt, "480: Input too long (38 character maximum)");
        return ZINT_ERROR_TOO_LONG;
    }
    if (length != 5 && length != 9 && length != 11) {
        strcpy(symbol->errtxt, "479: Input length is not standard (5, 9 or 11 characters)");
        error_number = ZINT_WARN_NONCOMPLIANT;
    }
    if (is_sane(NEON, source, length) == ZINT_ERROR_INVALID_DATA) {
        strcpy(symbol->errtxt, "481: Invalid character in data (digits only)");
        return ZINT_ERROR_INVALID_DATA;
    }
    sum = 0;

    /* start character */
    strcpy(dest, "L");

    for (i = 0; i < length; i++) {
        lookup(NEON, PNTable, source[i], dest);
        sum += ctoi(source[i]);
    }

    check_digit = (10 - (sum % 10)) % 10;
    strcat(dest, PNTable[check_digit]);

    /* stop character */
    strcat(dest, "L");

    return error_number;
}

/* Puts PostNet barcodes into the pattern matrix */
INTERNAL int post_plot(struct zint_symbol *symbol, unsigned char source[], int length) {
    char height_pattern[256]; /* 5 + 38 * 5 + 5 + 5 + 1 = 206 */
    unsigned int loopey, h;
    int writer;
    int error_number, warn_number;

    error_number = postnet(symbol, source, height_pattern, length);
    if (error_number >= ZINT_ERROR) {
        return error_number;
    }

    writer = 0;
    h = (int) strlen(height_pattern);
    for (loopey = 0; loopey < h; loopey++) {
        if (height_pattern[loopey] == 'L') {
            set_module(symbol, 0, writer);
        }
        set_module(symbol, 1, writer);
        writer += 2;
    }
    warn_number = usps_set_height(symbol, error_number /*no_errtxt*/);
    symbol->rows = 2;
    symbol->width = writer - 1;

    return error_number ? error_number : warn_number;
}

/* Handles the PLANET system used for item tracking in the US */
static int planet(struct zint_symbol *symbol, unsigned char source[], char dest[], int length) {
    int i, sum, check_digit;
    int error_number = 0;

    if (length > 38) {
        strcpy(symbol->errtxt, "482: Input too long (38 character maximum)");
        return ZINT_ERROR_TOO_LONG;
    }
    if (length != 11 && length != 13) {
        strcpy(symbol->errtxt, "478: Input length is not standard (11 or 13 characters)");
        error_number = ZINT_WARN_NONCOMPLIANT;
    }
    if (is_sane(NEON, source, length) == ZINT_ERROR_INVALID_DATA) {
        strcpy(symbol->errtxt, "483: Invalid character in data (digits only)");
        return ZINT_ERROR_INVALID_DATA;
    }
    sum = 0;

    /* start character */
    strcpy(dest, "L");

    for (i = 0; i < length; i++) {
        lookup(NEON, PLTable, source[i], dest);
        sum += ctoi(source[i]);
    }

    check_digit = (10 - (sum % 10)) % 10;
    strcat(dest, PLTable[check_digit]);

    /* stop character */
    strcat(dest, "L");

    return error_number;
}

/* Puts PLANET barcodes into the pattern matrix */
INTERNAL int planet_plot(struct zint_symbol *symbol, unsigned char source[], int length) {
    char height_pattern[256]; /* 5 + 38 * 5 + 5 + 5 + 1 = 206 */
    unsigned int loopey, h;
    int writer;
    int error_number, warn_number;

    error_number = planet(symbol, source, height_pattern, length);
    if (error_number >= ZINT_ERROR) {
        return error_number;
    }

    writer = 0;
    h = (int) strlen(height_pattern);
    for (loopey = 0; loopey < h; loopey++) {
        if (height_pattern[loopey] == 'L') {
            set_module(symbol, 0, writer);
        }
        set_module(symbol, 1, writer);
        writer += 2;
    }
    warn_number = usps_set_height(symbol, error_number /*no_errtxt*/);
    symbol->rows = 2;
    symbol->width = writer - 1;

    return error_number ? error_number : warn_number;
}

/* Korean Postal Authority */
INTERNAL int korea_post(struct zint_symbol *symbol, unsigned char source[], int length) {
    int total, loop, check, zeroes, error_number;
    char localstr[8], dest[80];

    if (length > 6) {
        strcpy(symbol->errtxt, "484: Input too long (6 character maximum)");
        return ZINT_ERROR_TOO_LONG;
    }
    error_number = is_sane(NEON, source, length);
    if (error_number == ZINT_ERROR_INVALID_DATA) {
        strcpy(symbol->errtxt, "485: Invalid character in data (digits only)");
        return error_number;
    }
    zeroes = 6 - length;
    memset(localstr, '0', zeroes);
    ustrcpy(localstr + zeroes, source);

    total = 0;
    for (loop = 0; loop < 6; loop++) {
        total += ctoi(localstr[loop]);
    }
    check = 10 - (total % 10);
    if (check == 10) {
        check = 0;
    }
    localstr[6] = itoc(check);
    localstr[7] = '\0';
    *dest = '\0';
    for (loop = 5; loop >= 0; loop--) {
        lookup(NEON, KoreaTable, localstr[loop], dest);
    }
    lookup(NEON, KoreaTable, localstr[6], dest);
    expand(symbol, dest);
    ustrcpy(symbol->text, localstr);

    // TODO: Find documentation on BARCODE_KOREAPOST dimensions/height

    return error_number;
}

/* The simplest barcode symbology ever! Supported by MS Word, so here it is!
    glyphs from http://en.wikipedia.org/wiki/Facing_Identification_Mark */
INTERNAL int fim(struct zint_symbol *symbol, unsigned char source[], int length) {
    int error_number = 0;
    char dest[16] = {0};

    if (length > 1) {
        strcpy(symbol->errtxt, "486: Input too long (1 character maximum)");
        return ZINT_ERROR_TOO_LONG;
    }

    switch ((char) source[0]) {
        case 'a':
        case 'A':
            strcpy(dest, "111515111");
            break;
        case 'b':
        case 'B':
            strcpy(dest, "13111311131");
            break;
        case 'c':
        case 'C':
            strcpy(dest, "11131313111");
            break;
        case 'd':
        case 'D':
            strcpy(dest, "1111131311111");
            break;
        default:
            strcpy(symbol->errtxt, "487: Invalid character in data (\"A\", \"B\", \"C\" or \"D\" only)");
            return ZINT_ERROR_INVALID_DATA;
            break;
    }

    expand(symbol, dest);

#ifdef COMPLIANT_HEIGHTS
    /* USPS Domestic Mail Manual (USPS DMM 300) Jan 8, 2006 (updated 2011) 708.9.3
       X 0.03125" (1/32) +- 0.008" so X max 0.03925", height 0.625" (5/8) +- 0.125" (1/8) */
    error_number = set_height(symbol, (float) (0.5 / 0.03925), 20.0f /*0.625 / 0.03125*/, (float) (0.75 / 0.02415),
                    0 /*no_errtxt*/);
#else
    (void) set_height(symbol, 0.0f, 50.0f, 0.0f, 1 /*no_errtxt*/);
#endif

    return error_number;
}

/* Set height for DAFT-type codes, maintaining ratio. Expects row_height[0] & row_height[1] to be set */
/* Used by auspost.c also */
INTERNAL int daft_set_height(struct zint_symbol *symbol, float min_height, float max_height) {
    int error_number = 0;
    float t_ratio; /* Tracker ratio */

    if (symbol->height) {
        t_ratio = symbol->row_height[1] / (symbol->row_height[0] * 2 + symbol->row_height[1]);
        symbol->row_height[1] = symbol->height * t_ratio;
        if (symbol->row_height[1] < 0.5f) { /* Absolute minimum */
            symbol->row_height[1] = 0.5f;
            symbol->row_height[0] = 0.25f / t_ratio - 0.25f;
        } else {
            symbol->row_height[0] = (symbol->height - symbol->row_height[1]) / 2.0f;
        }
        if (symbol->row_height[0] < 0.5f) {
            symbol->row_height[0] = 0.5f;
            symbol->row_height[1] = t_ratio / (1.0f - t_ratio);
        }
    }
    symbol->row_height[2] = symbol->row_height[0];
    symbol->height = symbol->row_height[0] + symbol->row_height[1] + symbol->row_height[2];

#ifdef COMPLIANT_HEIGHTS
    if ((min_height && symbol->height < min_height) || (max_height && symbol->height > max_height)) {
        error_number = ZINT_WARN_NONCOMPLIANT;
        strcpy(symbol->errtxt, "499: Height not compliant with standards");
    }
#else
    (void)min_height; (void)max_height;
#endif

    return error_number;
}

/* Handles the 4 State barcodes used in the UK by Royal Mail */
static char rm4scc(unsigned char source[], char dest[], int length) {
    int i;
    int top, bottom, row, column, check_digit;
    char values[3], set_copy[] = KRSET;

    top = 0;
    bottom = 0;

    /* start character */
    strcpy(dest, "1");

    for (i = 0; i < length; i++) {
        lookup(KRSET, RoyalTable, source[i], dest);
        strcpy(values, RoyalValues[posn(KRSET, source[i])]);
        top += ctoi(values[0]);
        bottom += ctoi(values[1]);
    }

    /* Calculate the check digit */
    row = (top % 6) - 1;
    column = (bottom % 6) - 1;
    if (row == -1) {
        row = 5;
    }
    if (column == -1) {
        column = 5;
    }
    check_digit = (6 * row) + column;
    strcat(dest, RoyalTable[check_digit]);

    /* stop character */
    strcat(dest, "0");

    return set_copy[check_digit];
}

/* Puts RM4SCC into the data matrix */
INTERNAL int royal_plot(struct zint_symbol *symbol, unsigned char source[], int length) {
    char height_pattern[210];
    int loopey, h;
    int writer;
    int error_number;
    strcpy(height_pattern, "");

    if (length > 50) {
        strcpy(symbol->errtxt, "488: Input too long (50 character maximum)");
        return ZINT_ERROR_TOO_LONG;
    }
    to_upper(source);
    error_number = is_sane(KRSET, source, length);
    if (error_number == ZINT_ERROR_INVALID_DATA) {
        strcpy(symbol->errtxt, "489: Invalid character in data (alphanumerics only)");
        return error_number;
    }
    /*check = */rm4scc(source, height_pattern, length);

    writer = 0;
    h = (int) strlen(height_pattern);
    for (loopey = 0; loopey < h; loopey++) {
        if ((height_pattern[loopey] == '1') || (height_pattern[loopey] == '0')) {
            set_module(symbol, 0, writer);
        }
        set_module(symbol, 1, writer);
        if ((height_pattern[loopey] == '2') || (height_pattern[loopey] == '0')) {
            set_module(symbol, 2, writer);
        }
        writer += 2;
    }

#ifdef COMPLIANT_HEIGHTS
    /* Royal Mail Know How User's Manual Appendix C: using CBC
       https://web.archive.org/web/20120120060743/http://www.royalmail.com/sites/default/files/docs/pdf/Know How 2006 PIP vs 1.6a Accepted Changes.pdf
       Bar pitch and min/maxes same as Mailmark, so using recommendations from Royal Mail Mailmark Barcode Definition
       Document (15 Sept 2015) Section 3.5.1
     */
    symbol->row_height[0] = (float) ((1.9 * 42.3) / 25.4); /* ~3.16 */
    symbol->row_height[1] = (float) ((1.3 * 42.3) / 25.4); /* ~2.16 */
    /* Note using max X for minimum and min X for maximum */
    error_number = daft_set_height(symbol, (float) ((4.22 * 39) / 25.4), (float) ((5.84 * 47) / 25.4));
#else
    symbol->row_height[0] = 3.0f;
    symbol->row_height[1] = 2.0f;
    error_number = daft_set_height(symbol, 0.0f, 0.0f);
#endif
    symbol->rows = 3;
    symbol->width = writer - 1;

    return error_number;
}

/* Handles Dutch Post TNT KIX symbols
   The same as RM4SCC but without check digit
   Specification at http://www.tntpost.nl/zakelijk/klantenservice/downloads/kIX_code/download.aspx */
INTERNAL int kix_code(struct zint_symbol *symbol, unsigned char source[], int length) {
    char height_pattern[75], localstr[20];
    int loopey;
    int writer, i, h;
    int error_number;
    strcpy(height_pattern, "");

    if (length > 18) {
        strcpy(symbol->errtxt, "490: Input too long (18 character maximum)");
        return ZINT_ERROR_TOO_LONG;
    }
    to_upper(source);
    error_number = is_sane(KRSET, source, length);
    if (error_number == ZINT_ERROR_INVALID_DATA) {
        strcpy(symbol->errtxt, "491: Invalid character in data (alphanumerics only)");
        return error_number;
    }

    ustrcpy(localstr, source);

    /* Encode data */
    for (i = 0; i < length; i++) {
        lookup(KRSET, RoyalTable, localstr[i], height_pattern);
    }

    writer = 0;
    h = (int) strlen(height_pattern);
    for (loopey = 0; loopey < h; loopey++) {
        if ((height_pattern[loopey] == '1') || (height_pattern[loopey] == '0')) {
            set_module(symbol, 0, writer);
        }
        set_module(symbol, 1, writer);
        if ((height_pattern[loopey] == '2') || (height_pattern[loopey] == '0')) {
            set_module(symbol, 2, writer);
        }
        writer += 2;
    }

#ifdef COMPLIANT_HEIGHTS
    /* Dimensions same as RM4SCC */
    symbol->row_height[0] = (float) ((1.9 * 42.3) / 25.4); /* ~3.16 */
    symbol->row_height[1] = (float) ((1.3 * 42.3) / 25.4); /* ~2.16 */
    /* Note using max X for minimum and min X for maximum */
    error_number = daft_set_height(symbol, (float) ((4.22 * 39) / 25.4), (float) ((5.84 * 47) / 25.4));
#else
    symbol->row_height[0] = 3.0f;
    symbol->row_height[1] = 2.0f;
    error_number = daft_set_height(symbol, 0.0f, 0.0f);
#endif
    symbol->rows = 3;
    symbol->width = writer - 1;

    return error_number;
}

/* Handles DAFT Code symbols */
INTERNAL int daft_code(struct zint_symbol *symbol, unsigned char source[], int length) {
    char height_pattern[100];
    unsigned int loopey, h;
    int writer, i, error_number;
    strcpy(height_pattern, "");

    if (length > 50) {
        strcpy(symbol->errtxt, "492: Input too long (50 character maximum)");
        return ZINT_ERROR_TOO_LONG;
    }
    to_upper(source);
    error_number = is_sane(DAFTSET, source, length);

    if (error_number == ZINT_ERROR_INVALID_DATA) {
        strcpy(symbol->errtxt, "493: Invalid character in data (\"D\", \"A\", \"F\" and \"T\" only)");
        return error_number;
    }

    for (i = 0; i < length; i++) {
        if (source[i] == 'D') {
            strcat(height_pattern, "2");
        }
        if (source[i] == 'A') {
            strcat(height_pattern, "1");
        }
        if (source[i] == 'F') {
            strcat(height_pattern, "0");
        }
        if (source[i] == 'T') {
            strcat(height_pattern, "3");
        }
    }

    writer = 0;
    h = (int) strlen(height_pattern);
    for (loopey = 0; loopey < h; loopey++) {
        if ((height_pattern[loopey] == '1') || (height_pattern[loopey] == '0')) {
            set_module(symbol, 0, writer);
        }
        set_module(symbol, 1, writer);
        if ((height_pattern[loopey] == '2') || (height_pattern[loopey] == '0')) {
            set_module(symbol, 2, writer);
        }
        writer += 2;
    }

    /* Allow ratio of tracker to be specified in thousandths */
    if (symbol->option_2 >= 50 && symbol->option_2 <= 900) {
        float t_ratio = symbol->option_2 / 1000.0f;
        if (symbol->height < 0.5f) {
            symbol->height = 8.0f;
        }
        symbol->row_height[1] = symbol->height * t_ratio;
        symbol->row_height[0] = (float) ((symbol->height - symbol->row_height[1]) / 2.0);
    } else {
        symbol->row_height[0] = 3.0f;
        symbol->row_height[1] = 2.0f;
    }

    /* DAFT generic barcode so no dimensions/height specification */
    (void) daft_set_height(symbol, 0.0f, 0.0f);
    symbol->rows = 3;
    symbol->width = writer - 1;

    return error_number;
}

/* Flattermarken - Not really a barcode symbology! */
INTERNAL int flattermarken(struct zint_symbol *symbol, unsigned char source[], int length) {
    int loop, error_number;
    char dest[512]; /* 90 * 4 + 1 ~ */

    if (length > 90) {
        strcpy(symbol->errtxt, "494: Input too long (90 character maximum)");
        return ZINT_ERROR_TOO_LONG;
    }
    error_number = is_sane(NEON, source, length);
    if (error_number == ZINT_ERROR_INVALID_DATA) {
        strcpy(symbol->errtxt, "495: Invalid character in data (digits only)");
        return error_number;
    }
    *dest = '\0';
    for (loop = 0; loop < length; loop++) {
        lookup(NEON, FlatTable, source[loop], dest);
    }

    expand(symbol, dest);

    // TODO: Find documentation on BARCODE_FLAT dimensions/height

    return error_number;
}

/* Japanese Postal Code (Kasutama Barcode) */
INTERNAL int japan_post(struct zint_symbol *symbol, unsigned char source[], int length) {
    int error_number, h;
    char pattern[69];
    int writer, loopey, inter_posn, i, sum, check;
    char check_char;
    char inter[23];

#ifndef _MSC_VER
    unsigned char local_source[length + 1];
#else
    unsigned char *local_source = (unsigned char *) _alloca(length + 1);
#endif

    if (length > 20) {
        strcpy(symbol->errtxt, "496: Input too long (20 character maximum)");
        return ZINT_ERROR_TOO_LONG;
    }

    ustrcpy(local_source, source);
    to_upper(local_source);

    if (is_sane(SHKASUTSET, local_source, length) == ZINT_ERROR_INVALID_DATA) {
        strcpy(symbol->errtxt, "497: Invalid character in data (alphanumerics and \"-\" only)");
        return ZINT_ERROR_INVALID_DATA;
    }
    memset(inter, 'd', 20); /* Pad character CC4 */
    inter[20] = '\0';

    i = 0;
    inter_posn = 0;
    do {
        if (((local_source[i] >= '0') && (local_source[i] <= '9')) || (local_source[i] == '-')) {
            inter[inter_posn] = local_source[i];
            inter_posn++;
        } else {
            if ((local_source[i] >= 'A') && (local_source[i] <= 'J')) {
                inter[inter_posn] = 'a';
                inter[inter_posn + 1] = local_source[i] - 'A' + '0';
                inter_posn += 2;
            }
            if ((local_source[i] >= 'K') && (local_source[i] <= 'T')) {
                inter[inter_posn] = 'b';
                inter[inter_posn + 1] = local_source[i] - 'K' + '0';
                inter_posn += 2;
            }
            if ((local_source[i] >= 'U') && (local_source[i] <= 'Z')) {
                inter[inter_posn] = 'c';
                inter[inter_posn + 1] = local_source[i] - 'U' + '0';
                inter_posn += 2;
            }
        }
        i++;
    } while ((i < length) && (inter_posn < 20));
    inter[20] = '\0';

    strcpy(pattern, "13"); /* Start */

    sum = 0;
    for (i = 0; i < 20; i++) {
        strcat(pattern, JapanTable[posn(KASUTSET, inter[i])]);
        sum += posn(CHKASUTSET, inter[i]);
    }

    /* Calculate check digit */
    check = 19 - (sum % 19);
    if (check == 19) {
        check = 0;
    }
    if (check <= 9) {
        check_char = check + '0';
    } else if (check == 10) {
        check_char = '-';
    } else {
        check_char = (check - 11) + 'a';
    }
    strcat(pattern, JapanTable[posn(KASUTSET, check_char)]);

    if (symbol->debug & ZINT_DEBUG_PRINT) printf("Check: %d, char: %c\n", check, check_char);

    strcat(pattern, "31"); /* Stop */

    /* Resolve pattern to 4-state symbols */
    writer = 0;
    h = (int) strlen(pattern);
    for (loopey = 0; loopey < h; loopey++) {
        if ((pattern[loopey] == '2') || (pattern[loopey] == '1')) {
            set_module(symbol, 0, writer);
        }
        set_module(symbol, 1, writer);
        if ((pattern[loopey] == '3') || (pattern[loopey] == '1')) {
            set_module(symbol, 2, writer);
        }
        writer += 2;
    }

    symbol->rows = 3;
    symbol->width = writer - 1;

#ifdef COMPLIANT_HEIGHTS
    /* Japan Post Zip/Barcode Manual pp.11-12 https://www.post.japanpost.jp/zipcode/zipmanual/p11.html
       X 0.6mm (0.5mm - 0.7mm)
       Tracker height 1.2mm (1.05mm - 1.35mm) / 0.6mm = 2,
       Ascender/descender = 1.2mm (Full 3.6mm (3.4mm - 3.6mm, max preferred) less T divided by 2) / 0.6mm = 2 */
    symbol->row_height[0] = 2.0f;
    symbol->row_height[1] = 2.0f;
    error_number = daft_set_height(symbol, (float) (3.4 / 0.7) /*~4.857*/, 3.6f / 0.5f /*7.2*/);
#else
    symbol->row_height[0] = 3.0f;
    symbol->row_height[1] = 2.0f;
    error_number = daft_set_height(symbol, 0.0f, 0.0f);
#endif

    return error_number;
}